Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24235. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed specifically for the 2001-2004 Subaru Outback and interchanges with OE parts 44101AE130 and 44101AE03A. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.